Sawyer’s Grand Prix 570 AF brand_Pentax 4 SMC Pentax-M lens is

4 SMC Pentax-M lens is clean and works great

Includes an Olympus Zuiko Auto-S 50mm f1

The Mamiya M645 is a medium-format SLR that shoots 6x4

but do note this: on the inner front element

your slide is mounted

Sawyer’s Grand Prix 570 AF brand_Pentax 4 SMC Pentax-M lens isThe Sawyers Grand Prix 570 AF is a projector for 35mm slides. It accepts optional Sawyers Rototray, Sawyers and Universal straight trays, and Sawyers stack loader accessories. One Universal tray is included. Its unclear why they called this projector a Grand Prix except that its made out of the same colour and texture of plastic as a 1960s Pontiac interior, so maybe that's all it takes? Works well, though.